Realms connecting issues, can't load terrain.

I can't load the terrain even if I successfully loaded the server(at least from my point of view). The only thing I got every time is bright sky and sun, else nothing. About a few seconds later, I always got kicked eventually. Few times I succeed in loading some pieces of the world, the creatures cannot move and I always got disconnected eventually.

 

Here are the bug reports: 

[22:03:56] [Render thread/INFO]: Setting user: orange_healthy[22:03:56] [Render thread/INFO]: Setting user: orange_healthy[22:04:01] [Render thread/INFO]: Backend library: LWJGL version 3.2.2 build 10[22:04:03] [Render thread/INFO]: Narrator library for x64 successfully loaded[22:04:04] [Render thread/INFO]: Reloading ResourceManager: Default[22:04:19] [Render thread/INFO]: OpenAL initialized.[22:04:19] [Render thread/INFO]: Sound engine started[22:04:19] [Render thread/INFO]: Created: 1024x1024x4 minecraft:textures/atlas/blocks.png-atlas[22:04:19] [Render thread/INFO]: Created: 256x128x4 minecraft:textures/atlas/signs.png-atlas[22:04:19] [Render thread/INFO]: Created: 1024x512x4 minecraft:textures/atlas/banner_patterns.png-atlas[22:04:19] [Render thread/INFO]: Created: 1024x512x4 minecraft:textures/atlas/shield_patterns.png-atlas[22:04:19] [Render thread/INFO]: Created: 256x256x4 minecraft:textures/atlas/chest.png-atlas[22:04:19] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/beds.png-atlas[22:04:19] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/shulker_boxes.png-atlas[22:04:20] [Render thread/INFO]: Created: 256x256x0 minecraft:textures/atlas/particles.png-atlas[22:04:20] [Render thread/INFO]: Created: 256x256x0 minecraft:textures/atlas/paintings.png-atlas[22:04:20] [Render thread/INFO]: Created: 256x128x0 minecraft:textures/atlas/mob_effects.png-atlas[22:04:47] [pool-2-thread-3/ERROR]: Couldn't get trial availabilityczg: Could not connect to Realms: connect timed out at cyy.a(SourceFile:442) ~[1.15.2.jar:?] at cyy.n(SourceFile:381) ~[1.15.2.jar:?] at czl$e.a(SourceFile:284) [1.15.2.jar:?] at czl$e.run(SourceFile:275) [1.15.2.jar:?] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_51] at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_51] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_51] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_51] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_51] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51][22:05:17] [pool-2-thread-1/ERROR]: Couldn't get pending invite countczg: Could not connect to Realms: connect timed out at cyy.a(SourceFile:442) ~[1.15.2.jar:?] at cyy.j(SourceFile:321) ~[1.15.2.jar:?] at czl$b.a(SourceFile:262) [1.15.2.jar:?] at czl$b.run(SourceFile:253) [1.15.2.jar:?] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_51] at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_51] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_51] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_51] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_51] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51][22:05:47] [pool-2-thread-1/ERROR]: Couldn't get pending invite countczg: Could not connect to Realms: connect timed out at cyy.a(SourceFile:442) ~[1.15.2.jar:?] at cyy.j(SourceFile:321) ~[1.15.2.jar:?] at czl$b.a(SourceFile:262) [1.15.2.jar:?] at czl$b.run(SourceFile:253) [1.15.2.jar:?] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_51] at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_51] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_51] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_51] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_51] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]